苏州混凝土水泥制品研究院有限公司

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发布时间:2020-01-06 00:00:00
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杂志简介

主办单位: 苏州混凝土水泥制品研究院
中国混凝土与水泥制品协会
  • 主编 : 李建华
  • 常务副主编 : 王春蓉
  • 刊期 : 月刊
  • 电话 : 0512-68285716
  • E-mail : sccpitg@126.com
  • 国内统一刊号(CN) : 32-1173/TU
  • 国际标准刊号(ISSN) : 1000-4637
  • 邮发代号 : 28-80
hunnitu 微信公众号
hunnitu 扫码订购杂志

混凝土研究

水泥基自密实修复砂浆的制备及性能研究
水泥基自密实修复砂浆的制备及性能研究
  • 郭 超1,李秋义2,岳公冰2
2022年第6期
摘要
引用本文
摘   要:为充分发挥无机修复材料在混凝土结构损伤中的应用,研究了骨料种类及粒径、减水剂掺量、胶砂比、胶粉掺量、聚丙烯(PP)纤维掺量、消泡剂掺量对自密实快速修复砂浆工作性及力学性能的影响。结果表明:石英砂砂浆比河砂砂浆有更高的抗压强度,但韧性较差;综合考虑性能及经济性,减水剂掺量为1.6%较为适宜;随着胶砂比降低,砂浆的力学性能下降;掺入2.5%胶粉的砂浆比空白组流动度提高了3.1%,抗折强度提高了8.5%,但过量的胶粉对砂浆性能产生消极影响;PP纤维对砂浆的工作性无明显影响,但随着其掺量增加,砂浆的抗压强度下降;消泡剂的掺入减小了砂浆的流动度,但掺量超过0.1%后几乎不再变化,而砂浆的力学性能随着其掺量的增加先上升后下降。 Abstract: To enhance the application of inorganic repair materials in the damage of concrete structures, the effects of sand type and particle size, superplasticizer dosage, binder sand ratio, latex powder and PP fiber, defoamer dosage on the basic performance of self-compacting rapid repair mortar were studied. The results show that the mortar made of quartz sand has higher compressive strength but lower toughness compared with river sand. From the performance and economy point of view, 1.6% dosage of superplasticizer is more suitable. The mechanical properties of the mortar decrease with the decrease of the binder sand ratio. 2.5% latex powder can improve 3.1% fluidity and 8.5% flexural strength of mortar, but too much latex powder will have a negative impact on the properties. PP fiber has no obvious effect on the workability of mortar, but with the increase of its content, the compressive strength shows a downward trend. The addition of defoamer reduces the fluidity of mortar, but it almost does not change when the content exceeds 0.1%. The mechanical strength first increases and then decreases with the increase of defoamer dosage.
郭超,李秋义,岳公冰.水泥基自密实修复砂浆的制备及性能研究[J].混凝土与水泥制品,2022(6):1-5. GUO C,LI Q Y,YUE G B.Research on Preparation and Properties of Cement-based Self-compacting Repair Mortar[J].China Concrete and Cement Products,2022(6):1-5.
减缩剂对超高性能混凝土性能的影响研究
减缩剂对超高性能混凝土性能的影响研究
  • 刘菲凡
2022年第6期
摘要
引用本文
摘   要:研究了减缩剂(SRA)掺量对超高性能混凝土(UHPC)抗压强度、抗折强度、自收缩和干燥收缩的影响。结果表明:随着减缩剂掺量的增加,UHPC的自收缩和干燥收缩显著降低,特别是早期自收缩减小效果更为明显,但同时会降低试件的抗压强度、抗折强度,且随着减缩剂掺量的增加,抗压强度不断降低。 Abstract: The effects of shrinkage reducing agent(SRA) dosage on compressive strength, flexural strength, self-shrinkage and drying shrinkage of UHPC were studied. The results show that with the increase of SRA, the self-shrinkage and drying shrinkage of UHPC are significantly reduced, especially for the early self-shrinkage reduction effect is more obvious, but at the same time the compressive strength and the flexural strength of the UHPC specimen are reduced, and with the increase of SRA, the compressive strength is continuously reduced.
刘菲凡.减缩剂对超高性能混凝土性能的影响研究[J].混凝土与水泥制品,2022(6):6-9,16. LIU F F.Effect of Shrinkage Reducing Admixture on the Properties of UHPC[J].China Concrete and Cement Products,2022(6):6-9,16.
微胶囊对水泥基复合材料自修复性能的影响综述
微胶囊对水泥基复合材料自修复性能的影响综述
  • 徐天辰1,宋玉峰2,欧阳利军1,杨泽沛1,王凯星1,秦亚洲1,杨桄胜1
2022年第6期
摘要
引用本文
摘   要:综述了掺微胶囊的水泥基复合材料自修复性能的研究成果,包括微胶囊的制备方法、微胶囊的自身性质、微胶囊对水泥基复合材料性能的影响、微胶囊修复水泥基复合材料的机理和修复效果,对比讨论了相关文献的试验结果,并展望了水泥基复合材料自修复性能研究的发展方向。 Abstract: The research results of self-healing properties of microcapsule cement-based composites are reviewed, including the preparation method of microcapsules, the properties of microcapsules, the effect of microcapsules on the properties of cement-based composites materials, mechanism and effect of microcapsules repairing cement-based composites materials. The experimental results of relevant literatures are compared and analyzed. In addition, the future research trend of self-healing properties of cement-based composites is summarized and discussed.
徐天辰,宋玉峰,欧阳利军,等.微胶囊对水泥基复合材料自修复性能的影响综述[J].混凝土与水泥制品,2022(6):10-16. XU T C,SONG Y F,OUYANG L J,et al.A Review of the Effect of Microcapsules on Self-healing Properties of Cement-based Composites[J].China Concrete and Cement Products,2022(6):10-16.
混凝土裂缝快速修补胶浆的制备及性能研究
混凝土裂缝快速修补胶浆的制备及性能研究
  • 姜克锦1,陈辉强2,尹 强1,熊 亮2,郭仪南1,姚晓康1
2022年第6期
摘要
引用本文
摘   要:以超细硅酸盐水泥和超细硫铝酸盐水泥为基准材料,以苯丙乳液和纳米SiO2为改性剂制备了一种混凝土桥梁底板裂缝快速修补胶浆,通过研究改性剂掺量对修补胶浆流动度和凝结时间的影响,确定了其最佳配合比,研究了苯丙乳液掺量对修补胶浆拉伸性能和强度的影响。结果表明:修补胶浆的最佳配合比为:m(超细水泥)∶m(水)∶m(纳米SiO2)∶ m(苯丙乳液)=100∶60∶2∶9;在此配合比下,该修补胶浆的初凝时间为56 min,终凝时间为64 min,初始流动度和 30 min 流动度分别为 250 mm和65 mm, 28 d抗压强度和抗折强度分别为19.4 MPa和6.1 MPa,折压比为31.4%,与裂缝壁的黏结强度为2.57 MPa;该修补胶浆施工性能、强度和韧性优良,与裂缝壁黏结性能良好,可确保裂缝修补后的使用耐久性。 Abstract: With ultrafine portland cement and ultrafine sulphoaluminate cement as the base materials, with styrene-acrylic emulsion and nano-SiO2 as modifiers, a kind of quick repair mortar for concrete bridge base crack was prepared. The optimal mix property of modifier was determined by studying the influence of modifier content on the fluidity and setting time of repair mortar. The effect of the content of styrene-acrylic emulsion on the tensile properties and strength of the repair mortar was systematically studied. The results show that the optimal mix proportion of repair mortar is: m(ultra-fine cement)∶m(water)∶m(nano-SiO2)∶m(styrene-acrylic emulsion)=100∶60∶2∶9. Under the optimal proportion, the initial setting time of the repair mortar is about 56 min, and the final setting time is 64 min, the initial fluidity and the fluidity after 30 minutes are 250 mm and 65 mm. The 28 d compressive strength and flexural strength are 19.4 MPa and 6.1 MPa respectively, and the flexural ratio is 31.4%, and the bond strength to the crack wall is 2.57 MPa. The repair mortar has excellent construction performance, strength and toughness, and has good bonding performance with the crack wall, which can ensure the durability after the crack is repaired.
姜克锦,陈辉强,尹强,等.混凝土裂缝快速修补胶浆的制备及性能研究[J].混凝土与水泥制品,2022(6):17-20,26. JIANG K J,CHEN H Q,YIN Q,et al.Study on Preparation and Properties of Quick Repair Mortar for Concrete Crack[J].China Concrete and Cement Products,2022(6):17-20,26.
单侧压对冻融混凝土劈拉损伤特性的影响
单侧压对冻融混凝土劈拉损伤特性的影响
  • 李文博a,b,王乾峰a,b,彭 刚a,b,赵 茗a,b,程卓群a,b
2022年第6期
摘要
引用本文
摘   要:对冻融混凝土进行了不同单侧压下的劈拉试验,分析了冻融循环次数和单侧压对混凝土劈拉性能的影响,并结合声发射技术研究了混凝土在劈拉过程中的损伤发展,建立了混凝土损伤演化方程。结果表明:随着冻融循环次数的增加,混凝土冻融劣化程度加深,峰值应力明显降低;相同冻融循环次数下,单侧压越大,混凝土的峰值应力越大;经历冻融循环后的混凝土损伤发展速度加快,单侧压的存在对混凝土的损伤发展起到延阻作用;考虑冻融循环次数和单侧压作用的混凝土劈拉损伤演化曲线均可分为损伤初始发展阶段、损伤稳定发展阶段和损伤快速发展阶段。 Abstract: The split tensile test of freeze-thaw concrete under different unilateral compression was carried out. The influence of the number of freeze-thaw cycles and unilateral compression on the split tensile performance of concrete was analyzed, and the damage of concrete during the split tensile process was studied by acoustic emission technology. The concrete damage evolution formula was established. The results show that as the number of freeze-thaw cycles increases, the degree of freeze-thaw degradation of concrete deepens, and the peak stress decreases significantly. Under the same number of freeze-thaw cycles, the greater the unilateral pressure, the greater the peak stress of concrete. The development speed of concrete damage after the freeze-thaw cycles is accelerated, and the existence of unilateral pressure has an effect of extending resistance on concrete damage. The split tensile damage evolution curve of concrete considering the number of freeze-thaw cycles and unilateral pressure can be divided into initial damage development stage, stable damage development stage, and rapid damage development stage.
李文博,王乾峰,彭刚,等.单侧压对冻融混凝土劈拉损伤特性的影响[J].混凝土与水泥制品,2022(6):21-26. LI W B,WANG Q F,PENG G,et al.Influence of Unilateral Pressure on the Split Tensile Damage Characteristics of Freeze-thaw Deteriorated Concrete[J].China Concrete and Cement Products,2022(6):21-26.
基于Drucker-Prager准则的再生混凝土破坏研究
基于Drucker-Prager准则的再生混凝土破坏研究
  • 赵江涛
2022年第6期
摘要
引用本文
基于Drucker-Prager准则对C30、C40再生混凝土动、静态荷载作用下的破坏机理与破坏形式进行了分析。结果表明:在静态荷载作用下,再生混凝土的破坏过程可分为四个阶段,主要表现为由脆性破坏向塑性破坏的转变;动态荷载对再生混凝土的动态抗压强度具有增强效应;在动态荷载作用下,再生混凝土主要表现为粉碎破坏,并随着冲击气压的增加,粉碎程度提高,再生混凝土的应力-应变曲线均呈先上升后下降的趋势,且上升段的斜率随冲击气压的增加而增大,而下降段的斜率相似,总体呈现从应变硬化发展为应变软化的现象。 Based on the Drucker-Prager criterion, the failure mechanism and failure form of C30 and C40 recycled concrete under dynamic and static loads were analyzed. The results show that under static loads, The failure process of recycled concrete can be divided into four stages, mainly manifested as the transition from brittle failure to plastic failure. Dynamic load has an enhancement effect on the dynamic compressive strength of recycled concrete. Under the action of dynamic load, the main performance of recycled concrete is crushing failure, and the crushing degree increases with the increase of impact air pressure. The stress-strain curves of recycled concrete all show a trend of rising first and then falling, and the slope of the ascending section increases with the increase of the impact air pressure, while the slope of the descending section is similar, and the phenomenon of developing from strain hardening to strain softening is generally exhibited.
赵江涛.基于Drucker-Prager准则的再生混凝土破坏研究[J].混凝土与水泥制品,2022(6):27-30,36. ZHAO J T.Study on Failure of Recycled Concrete Based on Drucker-Prager Criterion[J].China Concrete and Cement Products,2022(6):27-30,36.
超轻质混凝土的抗冻性试验方法研究
超轻质混凝土的抗冻性试验方法研究
  • 刘 迪,王 玲,王振地,方 俊
2022年第6期
摘要
引用本文
针对现有方法评价超轻质混凝土的抗冻性存在烘干开裂、冻融失效过快等不足,提出了一种改进测试方法,即试件饱水后再沥水,以调节含水率,并采用气冻气融进行冻融循环试验。研究了沥水时间、融化温度和试件尺寸对超轻质混凝土强度损失率和质量损失率的影响。结果表明:控制沥水时间能有效调节试件的含水率;随着沥水时间的延长,试件的冻融质量损失率和强度损失率大体呈下降趋势;降低冻融循环试验时的融化温度能有效解决试件的开裂问题;尺寸较小试件对温度的敏感程度相对较大,尺寸较大的试件冻融破坏严重,不易搬运。并在此研究基础上,提出了适合超轻质混凝土抗冻性试验的改进方法,确定了适宜的沥水时间、融化温度和试件尺寸,分别为6 h、15 ℃和100 mm×100 mm×100 mm,可为超轻质混凝土的抗冻性测试提供参考。 Aimed to solve the deficiencies of the domestic existing msethod for evaluating the freeze-thaw resistance of ultra-lightweight concrete(ULWC), such as cracking caused by drying and deterioration by freeze-thaw cycles too fast, a new method was put forward, in which the moisture content of the ULWC specimen was adjusted by controlling draining time after soaked in water, and then the mode of freezing and thawing cycle in air was used. The effects of test parameters such as draining time of specimen, thawing temperature and specimen size on the strength loss rate and mass loss rate of ULWC were studied. The results show that controlling the draining time can effectively adjust the moisture content of the specimen. Both the freeze-thaw mass loss rate and strength loss rate of the specimens generally show a downward trend with the extension of the draining time. Lowering the melting temperature can effectively solve the problem of cracking of ULWC specimen during the freeze-thaw test. The smaller size of the specimen is relatively more sensitive to temperature, and the larger size of the specimen is severely damaged by freezing and thawing, and is not easy to handle. Based on the research, a new test method suitable for the evaluation of freeze-thaw resistance of ULWC was proposed. The appropriate drain time, thawing temperature and specimen size were determined to be 6 h, 15 °C and 100 mm×100 mm×100 mm, respectively. The results can provide a reference for the frost resistance test of ULWC.
刘迪,王玲,王振地,等.超轻质混凝土的抗冻性试验方法研究[J].混凝土与水泥制品,2022(6):31-36. LIU D,WANG L,WANG Z D,et al.Test Method for Freeze-thaw Resistance of Ultra-lightweight Concrete[J].China Concrete and Cement Products,2022(6):31-36.

水泥混凝土制品

UHPC预制桥面板生产工艺研究
UHPC预制桥面板生产工艺研究
  • 高玉军1,2,3,孙 武1,2,3,邵建冬1,2,王胜胜1,2,秦明强1,2,3
2022年第6期
摘要
引用本文
依托实际工程,分析了超高性能混凝土(UHPC)材料特性,研究了UHPC预制桥面板模板制作、UHPC拌合、钢纤维分散、蒸汽养护等生产工艺,并进行了工程应用,结果表明,采用上述生产工艺生产的UHPC预制桥面板的外观质量、尺寸偏差、力学强度均满足设计要求。 Based on the actual project, the material characteristics of ultra-high performance concrete (UHPC) were analyzed, and the production processes such as UHPC precast bridge decks mold assembling, UHPC mixing, steel fiber dispersion and steam curing were studied. The preparation technology of UHPC precast bridge deck is applied in the engineering application, and the results show that the appearance quality, dimensional deviation and mechanical strength of UHPC precast bridge decks produced by the above production processes can meet the design requirements.
高玉军,孙武,邵建冬,等.UHPC预制桥面板生产工艺研究[J].混凝土与水泥制品,2022(6):37-41. GAO Y J,SUN W,SHAO J D,et al.Research on Production Technology of UHPC Precast Bridge Decks[J].China Concrete and Cement Products,2022(6):37-41.
基于ANSYS的配筋UHPC梁数值仿真分析
基于ANSYS的配筋UHPC梁数值仿真分析
  • 马志贵1,武维宏1,冀 伟2
2022年第6期
摘要
引用本文
马志贵,武维宏,冀伟.基于ANSYS的配筋UHPC梁数值仿真分析[J].混凝土与水泥制品,2022(6):42-45. MA Z G,WU W H,JI W,et al.Numerical Simulation Analysis of Reinforced UHPC Beams by ANSYS Software[J].China Concrete and Cement Products,2022(6):42-45.

纤维水泥及制品

PVA纤维轻骨料混凝土的力学性能及抗压强度尺寸效应研究
PVA纤维轻骨料混凝土的力学性能及抗压强度尺寸效应研究
  • 王圣怡1,2,朱 然1,2,占羿箭1,2
2022年第6期
摘要
引用本文
研究了聚乙烯醇(PVA)纤维的长度(3 mm、6 mm、12 mm)和体积掺量(0、0.1%、0.3%、0.5%、1.0%、1.5%、2.0%)对轻骨料混凝土抗压和劈裂抗拉性能的影响,并对PVA纤维轻骨料混凝土的抗压强度尺寸效应进行了研究。结果表明:随着PVA纤维长度和体积掺量的增加,轻骨料混凝土的抗压强度和劈裂抗拉强度基本均呈降低趋势,当PVA纤维长度为3 mm、体积掺量为0.1%时,轻骨料混凝土的抗压强度和劈裂抗拉强度达到最大;PVA纤维轻骨料混凝土的抗压强度尺寸效应较为显著,建立的PVA纤维轻骨料混凝土抗压强度尺寸效应公式与试验结果吻合良好。 The effects of length(3 mm, 6 mm, 12 mm) and volume content(0, 0.1%, 0.3%, 0.5%, 1.0%, 1.5%, 2.0%) of polyvinyl alcohol(PVA) fibers on the compressive and splitting tensile properties of lightweight aggregate concrete were studied, and the size effect of compressive strength of PVA fiber lightweight aggregate concrete was studied. The results show that with the increase of PVA fiber length and volume content, the compressive strength and splitting tensile strength of lightweight aggregate concrete basically show a decreasing trend. When the PVA fiber length is 3 mm and the volume content is 0.1%, the compressive strength and splitting tensile strength of lightweight aggregate concrete reach the maximum. The size effect of compressive strength of PVA fiber lightweight aggregate concrete is significant. The established formula of size effect of compressive strength of PVA fiber lightweight aggregate concrete is in good agreement with the experimental results.
王圣怡,朱然,占羿箭.PVA纤维轻骨料混凝土的力学性能及抗压强度尺寸效应研究[J].混凝土与水泥制品,2022(6):46-52. WANG S Y,ZHU R,ZHAN Y J.Study on Mechanical Properties and Size Effect of Compressive Strength of PVA Fiber Reinforced Lightweight Aggregate Concrete[J].China Concrete and Cement Products,2022(6):46-52.
PVA纤维增强水泥基复合材料拉伸性能的影响因素研究
PVA纤维增强水泥基复合材料拉伸性能的影响因素研究
  • 吴明星1,于本田1,2,3,李彦宵1,陆 通1,曾嘉豪4
2022年第6期
摘要
引用本文
吴明星,于本田,李彦宵,等.PVA纤维增强水泥基复合材料拉伸性能的影响因素研究[J].混凝土与水泥制品,2022(6):53-57. WU M X,YU B T,LI Y X,et al.Study on the Influencing Factors of Tensile Properties of PVA Fiber Reinforced Cementitious Composites[J].China Concrete and Cement Products,2022(6):53-57.

房建材料及制品

配筋超高性能混凝土梁抗弯性能有限元分析
配筋超高性能混凝土梁抗弯性能有限元分析
  • 宋 斌,刘 芳
2022年第6期
摘要
引用本文
基于ABAQUS有限元软件,采用混凝土塑性损伤(CDP)模型模拟了超高性能混凝土(UHPC)的本构关系,使用三维实体单元和桁架单元模拟了UHPC和纵筋之间的接触关系,研究了配筋率、截面有效高度与截面高度比值和UHPC抗拉强度对UHPC梁抗弯性能的影响。结果表明:随着配筋率的提高和截面有效高度与截面高度比值的增大,UHPC梁的屈服荷载、峰值荷载以及对应的挠度均明显提高;随着UHPC抗拉强度的增大,UHPC梁的峰值荷载和屈服荷载增大,但峰值荷载和屈服荷载对应的挠度减小。 Based on ABAQUS finite element software, the constitutive relationship of ultra-high performance concrete (UHPC) was simulated by concrete damage plasticity(CDP) model, and the contact relationship between UHPC and longitudinal reinforcement were simulated by three-dimensional solid element and truss element. The effects of reinforcement ratio, the ratio of effective section height to section height and UHPC tensile strength on the flexural performance of UHPC beam were studied. The results show that the yield load, peak load and corresponding deflection of UHPC beam increase significantly with the increase of reinforcement ratio and the ratio of effective section height to section height. With the increase of UHPC tensile strength, the peak load and yield load of UHPC beam increase, but the deflections corresponding to peak load and yield load decrease.
宋斌,刘芳.配筋超高性能混凝土梁抗弯性能有限元分析[J].混凝土与水泥制品,2022(6):58-61. SONG B,LIU F.Finite Element Analysis of Flexural Performance of Reinforced Ultra-high Performance Concrete Beams[J].China Concrete and Cement Products,2022(6):58-61.
陶粒泡沫混凝土轻质隔墙板研究
陶粒泡沫混凝土轻质隔墙板研究
  • 项泽强1,唐 昊1,吕泽文1,颜小波1,梁泽锋2,孟志武1
2022年第6期
摘要
引用本文
项泽强,唐昊,吕泽文,等.陶粒泡沫混凝土轻质隔墙板研究[J].混凝土与水泥制品,2022(6):62-65. XIANG Z Q,TANG H,LYU Z W,et al.Study on Ceramsite Foamed Concrete Light Weight Panels for Partition Wall[J].China Concrete and Cement Products,2022(6):62-65.
基于细观特征的泡沫混凝土导热系数有限元模拟
基于细观特征的泡沫混凝土导热系数有限元模拟
  • 蒋 俊1,党文婧1,管小军2,石友安3,徐田圆1,吴艳萍2,刘 铁2,李睿智3, 金 超2,李 军1,卢忠远1,张魁宝1
2022年第6期
摘要
引用本文
在泡沫混凝土孔结构实测参数的基础上,基于随机算法构建了泡沫混凝土代表性体积单元(RVE)模型,结合voxel网格技术,在周期性边界条件下模拟了泡沫混凝土的传热。结果表明:基于球体随机产生算法构建的RVE模型与泡沫混凝土的实测孔结构特征高度一致,孔径分布平均偏差最高为-2.0%,孔隙率平均偏差为-0.1%;基于voxel网格技术在周期性边界条件下求解出的泡沫混凝土导热系数模拟值与实测值的平均偏差仅为-3.1%,具有良好的可靠性。 Based on the measured pore structure parameters of foamed concrete, the representative volume element (RVE) model of foamed concrete was established based on randomized algorithm. Combined with voxel grid technology, the heat transfer of foamed concrete was simulated under periodic boundary conditions. The results show that the RVE model based on randomized ball generation algorithm is highly consistent with the measured pore structure characteristics of foamed concrete, the maximum average deviation of pore size distribution is -2.0%, and the average deviation of porosity is -0.1%. The average deviation between the simulated and measured values of thermal conductivity of foamed concrete based on voxel grid technology under periodic boundary conditions is only -3.1%, which has good reliability.
蒋俊,党文婧,管小军,等.基于细观特征的泡沫混凝土导热系数有限元模拟[J].混凝土与水泥制品,2022(6):66-70. JIANG J,DANG W J,GUAN X J,et al.Finite Element Simulation on Thermal Conductivity of Foamed Concrete Based on Mesoscopic Characteristics[J].China Concrete and Cement Products,2022(6):66-70.

标准解读

GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析
GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析
  • 王春蓉1,钮如嵩1,胡佳星2,奚飞达1,田 寅1,史星祥1,潘从玲1,邓稚川1,夏如茜1
2022年第6期
摘要
引用本文
新制定的国家标准GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》已于 2022年3月1日实施。为便于该标准的使用方准确理解标准条款的具体含义,正确贯彻实施标准条款的具体要求和规定,介绍了该标准的编制背景和意义,并对标准的主要条款及其制定理由进行了解释和说明。 The newly formulated national standard of GB/T 40399—2021 General Technical Conditions for Precast Concrete Part of Prefabricated Construction has been officially implemented in March 1st, 2022. In order to facilitate understanding the specific meaning of the standard terms and correctly implement the specific requirements and provisions of the standard terms by the users, the purpose and significance of the standard are introduced, and the main provisions of the standard and the revision reasons are expained.
王春蓉,钮如嵩,胡佳星,等.GB/T 40399—2021《装配式混凝土建筑用预制部品通用技术条件》主要条文解析[J].混凝土与水泥制品,2022(6):71-76. WANG C R,NIU R S,HU J X,et al.Analysis of Main Clauses in GB/T 40399—2021 General Technical Conditions for Precast Concrete Part of Prefabricated Construction[J].China Concrete and Cement Products,2022(6):71-76.

施工技术研究

混凝土箱梁分层浇筑水化热实测与模拟分析
混凝土箱梁分层浇筑水化热实测与模拟分析
  • 邹惠琼,白洪涛,李 梅
2022年第6期
摘要
引用本文
为探究混凝土箱梁在分层浇筑施工过程中水化热温度的发展规律及其温度应力,对某主跨230 m的大跨度预应力混凝土箱梁桥零号块水化热进行了连续观测,并基于观测结果和有限元数值模拟计算,分析了零号块水化过程中底板、腹板和横隔板的温度应力发展规律;同时,讨论了分层浇筑和整体浇筑两种不同施工方案对零号块水化热温度应力分布的影响,研究了拆模时间对结构内外温度的影响程度。结果表明:内外温差在结构内部产生的温度应力超过了材料的抗拉强度,从而导致了温度裂缝的产生;采用分层浇筑施工的零号块将在上下层混凝土交界面附近形成一条拉应力带;过早拆模会使混凝土内外温差迅速扩大,而养护4 d后拆模混凝土内外温差相对较小,建议零号块拆模前养护时间不宜少于4 d。 In order to explore the development law of concrete hydration heat temperature of box girder by distinct-layer casting and accurately calculate the temperature stress, the concrete hydration heat in the No.0 block of box girder of a long span (230 m) PC continuous bridge was observed continuously. Based on the field test results and the numerical simulation calculation by FEA, the temperature stress development law of the bottom plate, web and diaphragm were analyzed. Meanwhile, the influence of the construction scheme on the hydration heat temperature stress of the No.0 block of box girder was discussed and the influence of the form removal time on temperature difference was researched. The results show that the excessive temperature difference can cause the excessive temperature stress and the temperature cracks. Besides, the tensile stress field can be formed near the interface between the top and the bottom concrete in the No.0 block of box girder by distinct-layer casting. The research results also show that the form removal time should not be less than 4 days to prevent temperature cracks.
邹惠琼,白洪涛,李梅.混凝土箱梁分层浇筑水化热实测与模拟分析[J].混凝土与水泥制品,2022(6):77-81. ZOU H Q,BAI H T,LI M.Measurement and Simulation Analysis of Hydration Heat of Layered Pouring Concrete Box Girder[J].China Concrete and Cement Products,2022(6):77-81.

节能降碳

改性磷石膏轻骨料在路基材料中的应用研究
改性磷石膏轻骨料在路基材料中的应用研究
  • 吕 伟,吴赤球,龚文辉,胡 彪
2022年第6期
摘要
引用本文
利用电石渣对磷石膏进行改性,得到了改性磷石膏,将改性磷石膏、水泥、矿渣粉按一定比例混合,采用造粒成球工艺制成改性磷石膏轻骨料,研究了改性磷石膏掺量和养护龄期对改性磷石膏轻骨料性能的影响,分析了改性磷石膏轻骨料替代部分碎石在磷石膏基路基材料中应用的可行性。结果表明:随着改性磷石膏掺量的增加,改性磷石膏轻骨料的筒压强度和软化系数降低,吸水率增大;当改性磷石膏掺量为88%、养护龄期为60 d时,改性磷石膏轻骨料的筒压强度为5.8 MPa、吸水率为9.8%、软化系数为0.75,符合GB/T 17431.1—2010《轻集料及其试验方法 第1部分:轻集料》的要求。研制的改性磷石膏轻骨料已成功应用于道路工程中。 The modified phosphogypsum was obtained by modifying phosphogypsum with carbide slag. The modified phosphogypsum, cement, and slag powder were mixed in a certain proportion, and the modified phosphogypsum lightweight aggregate was made by the granulation process. The effects of modified phosphogypsum content and curing age on the properties of modified phosphogypsum lightweight aggregate were studied, and the feasibility of using modified phosphogypsum lightweight aggregate to replace part of crushed stone in phosphogypsum-based subgrade materials was analyzed. The results show that with the increase of modified phosphogypsum content, the cylinder compressive strength and softening coefficient of modified phosphogypsum lightweight aggregate decrease, and the water absorption rate increases. When the content of modified phosphogypsum is 88% and the curing age is 60 d, the cylinder compressive strength of modified phosphogypsum lightweight aggregate is 5.8 MPa, the water absorption rate is 9.8%, and the softening coefficient is 0.75, which meets the requirements of GB/T 17431.1—2010 Lightweight Aggregates and Its Test Methods—Part 1: Lightweight Aggregates. The developed modified phosphogypsum light aggregate has been successfully used in road engineering.
吕伟,吴赤球,龚文辉,等.改性磷石膏轻骨料在路基材料中的应用研究[J].混凝土与水泥制品,2022(6):82-86. LYU W,WU C Q,GONG W H,et al.Research on the Application of Modified Phosphogypsum Lightweight Aggregate in Subgrade Materials[J].China Concrete and Cement Products,2022(6):82-86.
凝灰岩粉对水工混凝土耐久性能的影响研究
凝灰岩粉对水工混凝土耐久性能的影响研究
  • 张 平1,马旭东1,刘 洋1,郑海康1,李绍纯2
2022年第6期
摘要
引用本文
研究了凝灰岩粉的掺量和比表面积对水工混凝土耐久性能(抗渗性能、抗冻性能、抗硫酸盐侵蚀性能)的影响,并通过压汞法从微观层面对掺凝灰岩粉水工混凝土的孔结构进行了分析。结果表明:当凝灰岩粉的比表面积为352 m2/kg,且掺量控制在30%以下时,有利于改善水工混凝土的抗渗性能和抗硫酸盐侵蚀性能;凝灰岩粉的比表面积越大,对水工混凝土中小孔的填充作用越好,但对大孔的填充作用不明显。 The effects of the content and specific surface area of tuff powder on the durability(impermeability, frost resistance and sulfate corrosion resistance) of hydraulic concrete were studied, and the pore structure of hydraulic concrete mixed with tuff powder was analyzed from the micro level by mercury injection method. The results show that when the specific surface area of tuff powder is 352 m2/kg and the content of tuff powder is controlled below 30%, it is beneficial to improve the impermeability and sulfate corrosion resistance of hydraulic concrete. The larger the specific surface area of tuff powder, the better the filling effect of small pores in hydraulic concrete, but the filling effect of large pores is not obvious.  
张平,马旭东,刘洋,等.凝灰岩粉对水工混凝土耐久性能的影响研究[J].混凝土与水泥制品,2022(6):87-90,104. ZHANG P,MA X D,LIU Y,et al.Study on the Influence of Tuff Powder on the Durability of Hydraulic Concrete[J].China Concrete and Cement Products,2022(6):87-90,104.
镍铁渣粉对水泥基复合材料性能的影响研究
镍铁渣粉对水泥基复合材料性能的影响研究
  • 罗才松1,2,陈华艳2,刘旭宏1,祁 皑1
2022年第6期
摘要
引用本文
研究了镍铁渣粉掺量对镍铁渣粉-水泥复合胶凝材料标准稠度用水量、凝结时间的影响,分析了镍铁渣粉-水泥胶砂试件的抗压强度、抗折强度,探讨了镍铁渣粉-硅灰-水泥胶砂试件的力学性能。结果表明:镍铁渣粉-水泥复合胶凝材料的标准稠度用水量、凝结时间均与镍铁渣粉掺量呈正相关,而镍铁渣粉-水泥胶砂试件的抗压强度、抗折强度均与镍铁渣粉掺量呈负相关,且镍铁渣粉的掺量不宜大于30%;硅灰能有效改善镍铁渣粉-硅灰-水泥胶砂试件的内部结构,提高其强度,且镍铁渣粉与硅灰的总掺量不宜大于30%,镍铁渣粉和硅灰的质量比不宜小于1。 The effects of the ferronickel slag powder content on the standard consistency water consumption and setting time of ferronickel slag powder-cement composite cementitious material were studied. The compressive strength and flexural strength of ferronickel slag powder-cement mortar specimens were analyzed, and the mechanical properties of ferronickel slag powder-silica fume-cement mortar specimens were discussed. The results show that the standard consistency water consumption and setting time of ferronickel slag powder-cement composite cementitious material are positively correlated with the ferronickel slag powder content, while the compressive strength and flexural strength of ferronickel slag powder-cement mortar specimens are negatively correlated with the ferronickel slag powder content, and the ferronickel slag powder content should not be greater than 30%. Silica fume can effectively improve the internal structure and strength of ferronickel slag powder-silica fume-cement mortar specimen, and the total content of ferronickel slag powder and silica fume should not be greater than 30%, and the mass ratio of ferronickel slag powder to silica fume should not be less than 1.
罗才松,陈华艳,刘旭宏,等.镍铁渣粉对水泥基复合材料性能的影响研究[J].混凝土与水泥制品,2022(6):91-95. LUO C S,CHEN H Y,LIU X H,et al.Influence of Ferronickel Slag Powder on Properties of Cement-based Composites[J].China Concrete and Cement Products,2022(6):2022(6):91-95.
牡蛎壳粉对再生骨料透水混凝土性能的影响
牡蛎壳粉对再生骨料透水混凝土性能的影响
  • 于 琦1,张思雨1,李长江1,王玉璞1,王 腾1,全洪珠2
2022年第6期
摘要
引用本文
于琦,张思雨,李长江,等.牡蛎壳粉对再生骨料透水混凝土性能的影响[J].混凝土与水泥制品,2022(6):96-98. YU Q,ZHANG S Y,LI C J,et al.Effect of Oyster Shell Powder on Properties of Recycled Aggregate Pervious Concrete[J].China Concrete and Cement Products,2022(6):2022(6):96-98.
抹面砂浆原材料与应用研究进展
抹面砂浆原材料与应用研究进展
  • 陈 坤1,2,李育彪1,2,柯春云1,2,何 方1
2022年第6期
摘要
引用本文
陈坤,李育彪,柯春云,等.抹面砂浆原材料与应用研究进展[J].混凝土与水泥制品,2022(6):99-104. CHEN K,LI Y B,KE C Y,et al.Progress on Raw Materials and Application of Rendering Mortar[J].China Concrete and Cement Products,2022(6):2022(6):99-104.

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摘   要:针对目前对珊瑚碎屑混凝土的力学机理尚不清晰这一问题,对不同龄期和水灰比的珊瑚混凝土试块进行了试验研究。试验结果表明,珊瑚混凝土具有早强、快硬的特点;同时,当水灰比减小到一定程度后,单纯减小水灰比并不能明显提高珊瑚混凝土的抗压强度。本文从材料特性、界面特性以及龄期和水灰比等方面着手,对珊瑚混凝土的强度特性作了详细分析,并介绍了珊瑚混凝土的破坏形态,从而可为珊瑚碎屑应用于海岛混凝土工程提供一定的参考依据。 Abstract: Currently, the mechanical mechanism of coral debris concrete is not well understood, so the research on coral concrete test block in different age and water cement ratio is carried out. The test results show that coral concrete has the characteristics of fast strengthening and hardening, and when the water cement ratio decreases to a certain extent, simply reducing the water cement ratio could not result in obvious additions of compressive strength of coral concrete. From the aspects of material properties, interface properties,age and water cement ratio, the strength characteristics of the coral concrete are analyzed in detail, and the failure pattern is introduced, which can provide reference for application of coral debris in island concrete engineering.
王磊,范蕾. 珊瑚碎屑混凝土的强度特性及破坏形态分析[J].混凝土与水泥制品,2015(1):1-4. WANG L,FAN L.Strength Characteristic and Failure Pattern Analysis on Coral Debris Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(1):1-4.
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  • 汪秀石,杨智良,吴照学
2015年第2期
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引用本文
摘   要:研究了装配式结构用高强套筒灌浆料的性能,通过试配并进行了流动度、强度和膨胀性试验,优选出了优化配合比。同时基于优化配合比进行了水胶比、减水剂掺量和膨胀剂掺量对高强套筒灌浆料性能影响的研究。试验结果表明,随着水胶比(W/B)增加,流动度逐渐增大,但强度随W/B增加呈现明显降低趋势;减水剂可有效改善流动度,而当掺量过多时对强度有一定的影响;膨胀率随膨胀剂掺量增加呈现增长趋势,但当掺量小于8.0%时,膨胀效果较差,掺量大于12.0%时,对流动度和强度产生不利影响。 Abstract: The properties of high-strong cementitious grout for prefabricated concrete structure are studied, and the optimum mix proportion is elected by the tests of fluidity, strength and expansibility. The roles of W/B and the content of superplasticizer or expanders in high-strong cementitious grout for coupler are researched respectively based on the optimum mix proportion. The test results show that the fluidity of the grout increases with the increasing of W/B, but its strength has significantly decreasing trend; the fluidity of the grout can be improved effectively by superplasticizer, but its strength will decrease if superplasticizer content is excessive; expansion rate of the grout increases with the increasing of expanders agent content, but the expansibility is poor when the content is less than 8.0%, and it has an adversely affect on the liquidity and strength of the grout when the content is greater than 12.0%.
汪秀石,杨智良,吴照学.装配式结构用高强套筒灌浆料性能试验研究[J].混凝土与水泥制品,,2015(2):65-68. WANG X S,YANG Z L,WU Z X.Experimental Research on Performance of High-strong Cementitious Grouting for Prefabricated Concrete Structure[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(2):65-68.
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摘要
引用本文
摘   要:分别采用物理强化、化学强化和物理-化学复合强化三种不同的强化方式对简单破碎再生粗骨料进行强化处理,并采用100%取代天然碎石制备再生粗骨料混凝土,研究了不同强化处理后的再生粗骨料对混凝土工作性能、力学性能、抗渗透性能和抗碳化性能的影响。结果表明,经过强化处理的再生粗骨料混凝土的各项性能均有不同程度的提高,其中经二次物理强化处理后的再生粗骨料混凝土的用水量较天然碎石混凝土仅增加了6kg/m3,其抗压强度也达到最高值,接近于天然碎石混凝土;经二次物理强化和化学浸渍复合强化处理后的再生混凝土氯离子扩散系数降低了13.6%;三种不同的强化方式处理后,再生混凝土的碳化深度和碳化速度均有所降低。 Abstract: Three kinds of different strengthening technologies of physical enhancement, chemical enhancement and physical-chemical compound enhancement to strengthen the simple crushing recycled coarse aggregate are adopted, with 100% replaced natural gravel preparation of recycled coarse aggregate concrete, and the influences of the recycled coarse aggregate of different strengthening treatment on the working performance, mechanical properties, penetration resistance and carbonation resistance of concrete are studied. The research results show that, through strengthening treatment, recycled coarse aggregate concrete properties are improved to different degrees, the water consumption of recycled coarse aggregate concrete after the secondary physical strengthen treatment is only increased by 6kg/m3 than that of natural gravel concrete. The compressive strength also reached the highest value, close to the natural gravel concrete. The chloride ion diffusion coefficient of recycled concrete after the secondary physical-chemical compound strengthening treatment is reduced by 13.6%. The depth of carbonation and carbonation velocity decrease after three kinds of different strengthening treatments.
郭远新,李秋义,孔哲,等.再生粗骨料强化处理工艺对再生混凝土性能的影响[J].混凝土与水泥制品,2015(6):11-17. GUO Y X,LI Q Y,KONG Z,et al.Influence of Strengthening Treatment Technology of Recycled Coarse Aggregate on Performance of Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(6):11-17.
无砂再生透水混凝土配合比设计
无砂再生透水混凝土配合比设计
  • 张松涛1,贾欣悦2,宋 卓1,贾艳东1
2016年第12期
摘要
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张松涛,贾欣悦,宋卓,等.无砂再生透水混凝土配合比设计[J].混凝土与水泥制品,2016(12):6-12. ZHANG S T,JIA X Y,SONG Z,et al.Design on Mix Proportion of No-fines Pervious Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(12):6-12.
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
清水混凝土概念、研究现状、存在问题及配合比设计方 综述
  • 郭 伟1,路林海2,王龙志3,崔 鑫3,王桂玲4,张海霞3
2016年第10期
摘要
引用本文
摘   要:20世纪90年代后期以来,清水混凝土研究及工程应用得到了长足发展,许多城市建成了清水混凝土标志性工程。为了更好地促进清水混凝土研究的深入、工程质量的提高,对清水混凝土的概念、研究现状、存在问题及现有的清水混凝土配合比设计方法进行了系统地梳理、总结。通过对清水混凝土现状的研究,可使相关领域技术人员认识到清水混凝土发展中存在的不足、明确清水混凝土的研究方向,以实现清水混凝土技术研究水平的再提高,有力地支持清水混凝土工程应用的进一步推广。 Abstract: Since the late 1990s, research and application of fair-faced concrete has made considerable progress, many cities built landmark projects of fair-faced concrete. In order to better promote the study in-depth and the engineering quality improvement of fair-faced concrete, the concept, research status, existing problems and mixture design methods of fair-faced concrete are systematically reviewed and summarized. Through the above study of fair-faced concrete, the relevant technicians recognize the lack of fair-faced concrete in the development and realize a clear research direction, in order to improve research level, strongly support further promotion of fair-faced concrete in engineering applications.
郭伟,路林海,王龙志,等.清水混凝土概念、研究现状、存在问题及配合比设计方法综述[J].混凝土与水泥制品,2016(10):23-27. GUO W,LU L H,WANG L Z,et al.Summary for Concept, Research Status, Existing Problems and Mix Proportion Design of Fair-faced Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2016(10):23-27.
新型装配式建筑构件生产及其施工技术的研究与应用
新型装配式建筑构件生产及其施工技术的研究与应用
  • 范 玉1,4,徐 华2,黄 新3,黄继战4,马北京4
2015年第12期
摘要
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摘   要:通过对建筑PC构件的设计、生产、施工进行的研究,对建筑PC构件进行了再设计及优化,确定了合理的PC构件生产及其施工工艺方案,并对影响PC构件质量的相关因素进行了分析。 Abstract: Through the research on design of PC component, production and construction,  construction PC component is carried out for re-design and optimization. The reasonable PC component production and construction technology program are determined, and factors affecting the quality of PC are analyzed.
范玉,徐华,黄新,等.新型装配式建筑构件生产及其施工技术的研究与应用[J].混凝土与水泥制品,2015(12):87-89. FAN Y, XU H,HUANG X,et al.Research and Application of Production for New Type of Prefabricated Construction Component and Its Construction Technology[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):87-89.
石墨烯纳米片对水泥基复合材料力学性能的影响
石墨烯纳米片对水泥基复合材料力学性能的影响
  • 王 辉,刘爱红,李 航
2015年第12期
摘要
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摘   要:采用球磨法将石墨烯纳米片分散在水泥基体中,研究了石墨烯纳米片掺量对水泥基材料抗折强度和抗压强度的影响。实验结果表明,适量的石墨烯纳米片可均匀分散在水泥基体中,通过桥联效应和拔出效应对水泥基材料起增强增韧作用,当石墨烯纳米片掺量为0.04%时,石墨烯纳米片与水泥基体界面结合良好,没有明显过渡层,试件3d抗折强度和抗压强度分别提高了22.84%和23.61%。 Abstract: Graphene nanoplatelets (GNPs) were dispersed in the cement matrix by milling method. The effect of GNPs with different contents on the flexural strength and compressive strength of composites were studied. The results showed that well dispersed GNPs improved the mechanical properties of cement composites, owing to GNPs excellent pulling-out and bridging capability. When the GNPs content was 0.04%, the mechanical properties of cement composites were increased obviously. Its flexural and compressive strength increased by 22.84% and 23.61% respectively compared with the referee sample after curing 3 days. The interface between graphene nanoplatelets and cement was bonded well, with no obvious transition layer.
王辉,刘爱红,李航.石墨烯纳米片对水泥基复合材料力学性能的影响[J].混凝土与水泥制品,2015(12):25-27. WANG H,LIU A H,LI H.Influence of Graphene Nanoplatelets on Mechanical Properties of Cement-based Composites[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(12):25-27.
大型智能PC构件自动化生产线简介
大型智能PC构件自动化生产线简介
  • 孙 红1,孙 健1,吴玉厚1,赵凯军2
2015年第3期
摘要
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摘   要:根据混凝土工厂化生产的需要,阐述了大型智能PC构件生产线的组成部分、工艺过程和技术重点;分析了该生产线中蕴含的微观物流、信息采集、分布式控制及多智能体的协同过程,总结了PC构件生产线的优点和技术创新突破点,可为大型智能PC构件全自动生产线的研制提供理论基础和技术依据。 Abstract: According to the needs of the concrete factory production, the large scale intelligent automatic PC production line the technological process and technical keys of PC component are introduced, the cooperative process of microscopic logistics, information acquisition, distributed control and multi-agent systems are analyzed, the advantages and technology innovation of PC components production line are summarized, which can provide theoretical basis and technical basis for large scale intelligent automatic production line of PC components.
孙红,孙健,吴玉厚,等.大型智能PC构件自动化生产线简介[J].混凝土与水泥制品,2015(3):45-48. SUN H,SUN J,WU Y H,et al.Introduction of Large Scale Intelligent PC Automatic Production Line[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(3):45-48.
建筑垃圾再生微粉的研究现状
建筑垃圾再生微粉的研究现状
  • 毛新奇1,2,屈文俊1,朱 鹏1
2015年第8期
摘要
引用本文
摘   要:建筑垃圾再生微粉各项性能的研究是推进建筑垃圾资源化的重要基础。根据近年来国内关于再生微粉的主要研究成果,对材料来源、制备工艺、工作性能、力学性能和耐久性能等方面进行了综述,并对相关的影响因素进行了探讨分析。 Abstract: Research on the properties of utilization regeneration of powder for construction waste is the important foundation of resource utilization of construction waste. Based on the recent domestic research on recycled powder, material source, manufacturing process, workability, mechanical properties and the durability are reviewed. Besides, the related influence factors are discussed and analyzed.
毛新奇,屈文俊,朱鹏.建筑垃圾再生微粉的研究现状[J].混凝土与水泥制品,2015(8):89-93. MAO X Q,QU W J,ZHU P.Study Status of Recycled Powder for Construction Waste[J].CHINA CONCRETE AND CEMENT PRODUCTS,2015(8):89-93.
再生粗骨料及再生混凝土性能研究进展
再生粗骨料及再生混凝土性能研究进展
  • 甘 福1,周脉席1,3,濮 琦2
2018年第9期
摘要
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摘   要:结合国内外再生粗骨料混凝土的研究现状,综述了再生粗骨料性能、再生粗骨料混凝土性能、再生混凝土改性方法及改性后的混凝土性能等方面内容,展望了再生粗骨料及再生混凝土未来研究方向。 Abstract: Combining the study of recycled coarse aggregate concrete at home and abroad, the property of recycled coarse aggregate, the performance of recycled coarse aggregate concrete, the modified method of recycled concrete and the performance of modified concrete are reviewed, and the fature research direction on recycled coarse aggregate and recycled concrete is prospected.
甘福,周脉席,濮琦.再生粗骨料及再生混凝土性能研究进展[J].混凝土与水泥制品,2018(9):102-107. GAN F,ZHOU M X,PU Q.Research Progress of Performance of Recycled Coarse Aggregate and Recycled Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2018(9):102-107.
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